Video Signal Transmitter Apparatus and Receiver Apparatus Using Uncompressed Transmission System of Video Signal

1. A video signal transmitter apparatus that removes a part of a blanking interval of a video signal, and generates and outputs a converted video signal, based on the video signal including an active interval including video data and the blanking interval excluding the video data, the video signal transmitter apparatus comprising: a frequency divider configured to divide a frequency of a pixel clock in synchronization with the video signal by a predetermined ratio of transmission frequency division, and generate and output a frequency-divided clock as a converted pixel clock; a first storage unit configured to store the video signal; and a first controller that controls the first storage unit to write the video signal for the active interval of the video signal, and read the video signal for the active interval of the converted video signal and output a read video signal as the converted video signal, and that controls the first storage unit to remove a part of a signal included in a horizontal blanking interval existing periodically every horizontal line for the blanking interval of the video signal, wherein the ratio of transmission frequency division is equal to a ratio of a number of horizontal pixels of the converted video signal to a number of horizontal pixels of the video signal, wherein the first controller comprises: a first control signal generator configured to generate a read enable signal having a predetermined value for an interval corresponding to a product of a number of pixels included in the active interval of the video signal and one clock interval of the converted pixel clock; and a converted horizontal synchronizing signal generator configured to generate and output a converted horizontal synchronizing signal having a period of cycle identical to an interval required for transmitting one horizontal line of the converted video signal, the converted horizontal synchronizing signal having one pulse for one period of cycle, an interval of the pulse corresponding to at least one part of the blanking interval of the converted video signal, and wherein the first controller controls the first storage unit to write the video signal for the active interval of the video signal, and read the video signal from the first storage unit for such an interval that a value of the read enable signal is a predetermined value and output the read video signal as the converted video signal.

2. The video signal transmitter apparatus as claimed in claim 1 , wherein the first controller controls the first storage unit to remove a signal having a length identical with that of a removed horizontal blanking interval every horizontal line for a vertical blanking interval existing periodically every frame in the blanking interval of the video signal.

3. The video signal transmitter apparatus as claimed in claim 1 , wherein the ratio of transmission frequency division is a number obtained by dividing a natural number by a divisor of a number of horizontal pixels other than one and the number of horizontal pixels of the video signal.

4. The video signal transmitter apparatus as claimed in claim 1 , wherein the video signal transmitter apparatus deals with a plurality of signal formats for transmission data having numbers of horizontal pixels different from each other, and wherein the ratio of transmission frequency division is a value obtained by dividing a natural number by a divisor of a number of horizontal pixels other than one and the number of horizontal pixels of the plurality of signal formats for transmission data.

5. The video signal transmitter apparatus as claimed in claim 1 , wherein the ratio of transmission frequency division is a fraction having a denominator of an even number and a numerator of an even number.

6. The video signal transmitter apparatus as claimed in claim 1 , wherein the ratio of transmission frequency division is 20/22.

7. A video signal receiver apparatus that receives a converted video signal from a video signal transmitter apparatus and restores and outputs the video signal, wherein the video signal transmitter apparatus removes a part of a blanking interval of a video signal, generates and outputs a converted video signal, based on the video signal including an active interval including video data and the blanking interval excluding the video data, wherein the video signal transmitter apparatus comprises: a frequency divider configured to divide a frequency of a pixel clock in synchronization with the video signal with a predetermined ratio of transmission frequency division, and generate and output a frequency-divided clock as a converted pixel clock; a first storage unit configured to store the video signal; and a first controller that controls the first storage unit to write the video signal for the active interval of the video signal, and read the video signal for the active interval of the converted video signal output a read video signal as the converted video signal, and that controls the first storage unit to remove a part of a signal included in a horizontal blanking interval existing periodically every horizontal line for the blanking interval of the video signal, wherein the ratio of transmission frequency division is equal to a ratio of a number of horizontal pixels of the converted video signal to a number of horizontal pixels of the video signal, wherein the video signal receiver apparatus comprises: a frequency multiplier configured to multiply a frequency of the converted pixel clock by a predetermined ratio of receiving frequency multiplication, and output a frequency-multiplied converted pixel clock as a pixel clock; a second storage unit configured to store the converted video signal; and a second controller that controls the second storage unit to write the converted video signal in the second storage unit for the active interval of the converted video signal, and to read the converted video signal from the second storage unit for the active interval of the video signal and output a read converted video signal as the video signal, wherein the ratio of receiving frequency multiplication is a ratio of the number of horizontal pixels of the video signal to the number of horizontal pixels of the converted video signal.

8. The video signal receiver apparatus as claimed in claim 7 , wherein the second controller comprises: a second control signal generator configured to generate a write enable signal for the active interval of the converted video signal, and generate a read enable signal for an interval corresponding to a product of a number of pixels included in the active interval of the video signal and one clock interval of the pixel clock; and a horizontal synchronizing signal restoring unit configured to generate a horizontal synchronizing signal for a predetermined interval within the blanking interval of the video signal, based on the converted horizontal synchronizing signal, the horizontal synchronizing signal having a period of cycle identical with an interval of one line of the video signal, wherein the second controller controls the second storage unit to write the converted video signal for an interval of the write enable signal, and read the converted video signal from the second storage unit for an interval of the read enable interval.

9. A method of removing a part of a blanking interval of a video signal, and generating and outputting a converted video signal, based on the video signal including an active interval including video data and the blanking interval excluding the video data, the method comprising steps of: dividing a frequency of a pixel clock in synchronization with the video signal by a predetermined ratio of transmission frequency division, and generating and outputting a frequency-divided clock as a converted pixel clock; controlling a first storage unit to write the video signal for the active interval of the video signal, and read the video signal from the first storage unit for the active interval of the converted video signal and output a read video signal as the converted video signal, and controlling the first storage unit to remove a part of a signal included in a horizontal blanking interval existing periodically every horizontal line for the blanking interval of the video signal; generating a read enable signal having a predetermined value for an interval corresponding to a product of a number of pixels included in the active interval of the video signal and one clock interval of the converted pixel clock; and generating and outputting a converted horizontal synchronizing signal having a period of cycle identical to an interval required for transmitting one horizontal line of the converted video signal, the converted horizontal synchronizing signal having one pulse for one period of cycle, an interval of the pulse corresponding to at least one part of the blanking interval of the converted video signal, wherein the ratio of transmission frequency division is equal to a ratio of a number of horizontal pixels of the converted video signal to a number of horizontal pixels of the video signal, and wherein the controlling of the first storage unit to write comprises controlling the first storage unit to write the video signal for the active interval of the video signal, and read the video signal from the first storage unit for such an interval that a value of the read enable signal is a predetermined value and output the read video signal as the converted video signal.

10. A method of receiving a converted video signal generated by a video signal transmitting method and restoring and outputting the video signal, wherein the video signal transmitting method is provided for removing a part of a blanking interval of a video signal, and generating and outputting a converted video signal, based on the video signal including an active interval including video data and the blanking interval excluding the video data, wherein the video signal transmitting method comprises steps of: dividing a frequency of a pixel clock in synchronization with the video signal by a predetermined ratio of transmission frequency division, and generating and outputting a frequency-divided clock as a converted pixel clock; and controlling a first storage unit to write the video signal for the active interval of the video signal, and read the video signal from the first storage unit for the active interval of the converted video signal and output a read video signal as the converted video signal, and controlling the first storage unit to remove a part of a signal included in a horizontal blanking interval existing periodically every horizontal line for the blanking interval of the video signal, wherein the ratio of transmission frequency division is equal to a ratio of a number of horizontal pixels of the converted video signal to a number of horizontal pixels of the video signal, wherein the method of receiving the converted video signal comprises: multiplying a frequency of the converted pixel clock by a predetermined ratio of receiving frequency multiplication, and outputting a frequency-multiplied converted pixel clock as a pixel clock; and controlling a second storage unit to write the converted video signal in the second storage unit for the active interval of the converted video signal, and to read the converted video signal from the second storage unit for the active interval of the video signal and output a read converted video signal as the video signal, wherein the ratio of receiving frequency multiplication is a ratio of the number of horizontal pixels of the video signal to the number of horizontal pixels of the converted video signal.